Najat Chefnaj, Khalid Hilal, Ahmed Kajouni. Existence of Solutions for Nonlinear Fractional Order Differential Equations with Quadratic Perturbations. Results in Nonlinear Analysis [Internet]. 2022 Nov. 7 [cited 2024 May 15];5(3):360-71. Available from: https://nonlinear-analysis.com/index.php/pub/article/view/111